Fire-brick mold



De. 25, 1923. v 1,478,746

R. l.. KlNToN ET AL FIRE BRICK MOLD Filed Dec. 19, 1922 /917705 l? /L ne,"

nur umm? Patented Dec. 25, 1923.

UNITED STATES ROBERT L. KINTON, OF MEYERSDALE, AND AIVIIOS` F. HIBNER,

` PENNSYLVANIA.

, auatic PATENT OFFICE'.

OF CONNELLSVILLE,

Finn-BRICK MOLD.

To all whom t may concern.'

l Be it known that ROBERT L. KINToN and AMos F. HIBNER, citizens of the United States, residing at Meyersdale, in the county of Somerset, and Connellsville, in the county of Fayette, respectively, and State of Penn- Sylvania, have invented certain new and useful Improvements in Fire-Brick Molds, of which the following is a specification.

This invention relates toy improvements in molds and more especially to that class of molds which are employed in producing fire brick. Y In the use' of the ordinary mold which comprises a rectangular body open atits top, the plastic material is poured into the mold and permittedto set and when the molded bricks are turned out onto the drying iioor,

this is done by overturning the mold so that it will assume a position bottom uppermost', and then lifting the mold from the brick.

However, it has been found Vthat a very conf siderable percentage of the bricks are practically ruined` through distortion in this dumping operation for the reason that as the mold is turned over on one side, its side w-all will momentarily flatly Contact the drying vhfioor, resulting in an impact which While slight is suiicient to impose a tamping jar uponk the brick within they mold causing its edge` or side which is then uppermost to settle and become distorted. Therefore, the present invention has as its primary object to provide a mold designed especially for use in the production of fire brick and which mold will be so constructed that in the operation of discharging the brick onto the drying floor, the mold will no-t bey sub-y jected to the impact or jar referred to above and which is productive of the distorting tamping effect which produces an imperfect brick.

In the accompanying drawings:

Figure 1 is ayperspective view of a fire brick mold constructed in accordance with the present invention;

Figure 2 is a vertical transverse sectional view through the mold and the brick therein, the view illustrating in full and dottedk ylines the manner in which overturning of the mold to dump the brick is effected without a tamping jar being imposed upon the mold.

In the drawings, the mold is illustrate das comprising a hollow rectangular body open at its top, as is usual, and including opposite side walls 1,-endwalls 2, and a bottom 3, the loweredges of the side and end walls occupying, asusual, a common plane, and the bottom 3 being secured to the said lower edges of the end vvalls'with` and creating a tamping effect upon the' brick within the mold so that the edge of the brick which is then uppermost will settle more or less with the result that the brick when finally hardenedand'dried, will no-t be 0f true rect-angular form but willV be more or less 'distorted on one or two faces. The present invention resides in providing rockers upon the outer face of oneside wall of the mold which rockers are indicated in general by the numeral iand areadapted to insure against the impact referred to above and prevent any tamping of the 'brick at the time the'mold is overturned. These rockers are preferably two in number and are located adjacent the ends of the side wall upon which they are formed or provided and are preferably in the form of bosses which have rounded tread surfaces 6. The tread surfaces 6 describe a substantially cycloidal curve. Thatk is to say, the surface of each rocker, from the juncture of the outer side and lower edge faces of the side wall 1 of the mold body upon which it is formed or pro-vided, is curved gradually in an outward direction and toward the opposite edge face of said wall, as indicated ico jacent the Wal-l 1 ofthe mold upon which the rockers are provided, Will rest upon the drying floor as Will also the lower edge ofA the outer face of the said side Wall l. At this moment, howeven the inner or rear end of the tread 6 of each rocker Will likewise contact the floor surface, and when the mold is further overturned to assume first the full line position shown in Figure 2 and vthen the dotted line position indicated by the refer ence letter B, the treads of the rockers will ride upon the floor surface, maintaining the outer side of the side Wall l upon which the rockers are provided, clear of the drying floor s0 that the overturning operation'is effected Without the usual jar and incident distortion of the brick.

Having thus described the invention', what is claimed as new is;

l. A mold comprising a bottom and; err, compassing Walls and entirely open at its top: t0 permit ofunrestricted discharge ofy thel molded product when the mold is completely inverted, thermold being provided upon one of its saidrvalls` With. spaced rockers to engage a surface upon' which the mold isi to be overturned, the said rockers having arcu-v pletely inverted, the mold being providedV upon one of its said Walls with spaced rockers to engage a surface upon which the mold is to be overturned, the said rockers having arcuate tread surfaces, the tread surface of each rocker, atl one end, terminating substantially at the normally lower edge of the Wall upon which the rocker is provided and at its other end merging substantially with the normally upper edge of said Wall, the said tread surface of the rocker throughout its length describing a substantially cy# cloidal curve and whichV curve is of gra-duaL ly increasing abruptn'ess from the lirst-inen'- tioned t0 the last-mentioned end of the tread surface. Y

3. A mold comprising a bottom 'and' encompassingmvvalls and entirely openat its top to permit of unrestricted discharge of the molded lproduct when the mold is coinpletely inverted, the mold being pro-vided upon one of its said Walls with spaced rocl{ ers to engage a surface upon which the mold is to be overturned, the said rockers haa/*ing arcuate tread surfaces, the tread surface of each rocker, at one end, terminating sub-r stantially at the normally lower edge of the Wall upon which the rocker is provided and at its other end merging substantially with the normally upperedge of said Wall, the p-lane occupied by the said upper edge of the said Wall being tangent to the' curve of .the said upper portion of the rocker, the tread surface of 'the' rocljer'througliout its length describing a substantiallycycloidal curve which is of gradually increasing abruptness from the first mentioned to the. last 1nentioned end of the tread surface.

In testimony whereof We a-flix our signatures.

ROBERT L. KINTON. [Ls] AMOSYF. HBNER. [n s] 

